My friend and I were playing Modern RDW (me) vs UW Control and I swung with Goblin Guide to reveal a topdeck Terminus. I didn't play my Stormblood Berserker and Grim Lavamancer that turn and passed. Just another reason this guy is awesome.

That drawback of his can actually easily turn into a bit of advantage - if it's not a land sitting on top, you still get to see their next card, and that's gaining valuable information - something very rarely seen in mono red! Besides that, he's still a 2/2 hasty goblin for one mana. Nuts! 5/5

It's pretty surprising how much giving card advantage/filtering to your opponent isn't as much of a drawback as you'd expect. One of his benefit also comes from being a powerful blocker after he ceases to be relevant on offence.

The flavor of him revealing places to your opponent is pretty neat as well. I'm guessing the damage comes from him leading you into a trap and the haste is from him being so darn excited to get there.

Consider also that if you have more than one attacking, defending player looks always at the same top card of his/her library if it is not a land.For example, if you attack with three of these, three abilities trigger:- the first resolves, opponent looks at the top card; it's a land, so it takes it in hand- the second resolves, opponent looks at the top card; it's not a land, it remains on the top of library- the third resolves, the top card of the library is always the same; it's not a land.Were there one thousand of these abilities on the stack, the nonland card on top of the library is always the same!